AC

2007 Pontiac G5. Entire A/C system replaced. Worked for 1 day. Was told needed Coolant Temperature sensor. Replaced. Worked 1 day. Now told maybe Thermostat. When I replace this and it still doesn't work, what then? I'm thinking Electrical. Any guess?

ENTIRE SYSTEM WAS JUST CHANGED. GAS IS FULL. NO
LEAK.. WHEN WE RESET THE SYSTEM BY DISCONNECTING
THE NEGATIVE BATTERY CABLE FOR HALF HOUR, THE AC
WORKED FOR 1 DAY, THEN STOPPED WORKING. GOING TO
RESET THE SYSTEM AGAIN TODAY. WILL GET BACK TO YOU
AND LET YOU KNOW IF AC WORKS AFTER DOING THIS.

Daughter brought her car by last night. Took neg cable off
battery for 25 minutes. Reconnected the cable. Check engine
light went off & the AC worked well! Talked to her this morning.
On the way to work,(15 minute drive), the AC stopped working &
the check engine light came on. We know, since the AC works
intermittently the system has plenty of refrigerant(we also had it
checked); the system is full. I've NEVER heard of this before. Do
you have any suggestions? She's mad because even though
this was under warranty, she still is out $150.00 and didn't have
her car for 2 weeks! Thanks!

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